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  1. POHow do I get secure AuthSub session tokens in PHP?
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    <p>I am using the Google/YouTube APIs to develop web application which needs access to a users YouTube account. </p> <p>Normal unsecure requests work fine and I can upgrade one time tokens to session tokens without any hassle. The problem comes when I try and upgrade a secure token to a session token, I get:</p> <p>ERROR - Token upgrade for CIzF3546351vmq_P____834654G failed : Token upgrade failed. Reason: Invalid AuthSub signature.</p> <p>i use this:</p> <pre><code> function updateAuthSubToken($singleUseToken) { try { $client = new Zend_Gdata_HttpClient(); $client-&gt;setAuthSubPrivateKeyFile('/home/myrsakey.pem', null, true); $sessionToken = Zend_Gdata_AuthSub::getAuthSubSessionToken($singleUseToken, $client); $sessionToken = Zend_Gdata_AuthSub::getAuthSubSessionToken(trim($singleUseToken), $client); //$client-&gt;setAuthSubToken($sessionToken); } catch (Zend_Gdata_App_Exception $e) { print 'ERROR - Token upgrade for ' . $singleUseToken . ' failed : ' . $e-&gt;getMessage(); return; } $_SESSION['sessionToken'] = $sessionToken; $date = gmdate("M d Y H:i:s", mktime(0, 0, 0, 1, 1, 1998)); header('Authorization: AuthSub token="'.$_SESSION['sessionToken'].'" data="GET https://www.youtube.com/auth_sub_request '.$date.' 15948652339726849410" '. 'sig="MIICXAIBAAKBgQDLJn/sr7TrmQpsEaL312k9dEpikVGFHbE+FjNg7/lfagkTZXf3'. 't96omgSEyZat2RcckVAGs9dU5kbGLJxEaW2ChQplzCKDi+20HZZo7C1QCluaMJ6b'. ... '0pj+zWPy4T04PH3elN6EkhQ5Vxy5wbBkugqIDqfOKuM=" '. 'sigalg="rsa-sha1"'); } </code></pre> <p>i don't understand what is: nonce: a random 64-bit, unsigned number encoded as an ASCII string in decimal! i must put is after $date (... '.$date.' <code>15948652339726849410</code>" '... )</p>
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